-- More than 60 patients were received Wednesday night, hospital CEO Glenn Robinson said, with victims suffering from "blast injuries, orthopedic injuries (and) a lot of lacerations. While some of the injuries are minor, others are "quite serious."

-- A number of nearby residents were being evacuated because of the possibility of another explosion, officials said.

-- Chrystal Anthony said she saw the flames engulf a nursing home and an apartment complex.

The response

-- A field triage station was set up on a football field near the plant, Robinson said.

-- At least six helicopters were flying out the injured, Robinson said. Others were being transported by ambulance, and some were getting to the hospital by car, he added.

-- Hazardous material teams were being rushed to the scene, an emergency management official said.

-- Texas Gov. Rick Perry was working to get resources into the area, his spokesman said.

-- Anhydrous ammonia is a concern of those in the vicinity of the explosion,Smith said. According to the Centers for Disease Control and Prevention, anhydrous ammonia is a pungent gas with suffocating fumes that is used as a fertilizer.

-- Area residents told CNN that they were warned about the toxic substance.